[Numpy-discussion] when did column_stack become C-contiguous?

josef.pktd at gmail.com josef.pktd at gmail.com
Mon Oct 19 00:35:58 EDT 2015

>>> np.column_stack((np.ones(10), np.ones(10))).flags

>>> np.__version__

on my notebook which has numpy 1.6.1 it is f_contiguous

I was just trying to optimize a loop over variable adjustment in
regression, and found out that we lost fortran contiguity.

I always thought column_stack is for fortran usage (linalg)

What's the alternative?
column_stack was one of my favorite commands, and I always assumed we have
in statsmodels the right memory layout to call the linalg libraries.

("assumed" means we don't have timing nor unit tests for it.)

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